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var(--nav-line);align-items:center;gap:8px;padding:12px;display:flex}.rz-net{color:var(--nav-muted);flex:1;align-items:center;gap:7px;font-size:11.5px;display:flex}.rz-theme-btn{border:1px solid var(--nav-line);width:34px;height:30px;color:var(--nav-ink);cursor:pointer;background:0 0;border-radius:8px;place-items:center;display:grid}.rz-theme-btn:hover{background:var(--nav-active)}.rz-topbar,.rz-tabs{display:none}.rz-sheet-backdrop{z-index:70;background:#09111973;position:fixed;inset:0}.rz-more-sheet{z-index:71;background:var(--card-bg);box-shadow:var(--shadow-rz-lg);padding:10px 14px calc(18px + env(safe-area-inset-bottom));border-radius:18px 18px 0 0;animation:.18s ease-out filters-sheet-up;position:fixed;bottom:0;left:0;right:0}.rz-sheet-grab{background:var(--line-strong);border-radius:99px;width:36px;height:4px;margin:4px auto 12px}.rz-more-item{cursor:pointer;width:100%;color:var(--text-main);text-align:left;background:0 0;border:0;border-radius:10px;align-items:center;gap:12px;min-height:48px;padding:13px 10px;font-size:14.5px;font-weight:700;display:flex}.rz-more-item:hover{background:var(--brand-soft)}.rz-more-code{background:var(--brand-soft);width:30px;height:30px;color:var(--brand);border-radius:8px;flex:none;place-items:center;font-size:11px;font-weight:800;display:grid}.rz-more-lbl{flex:1}.rz-more-note{color:var(--faint);font-size:11px;font-weight:600}@media (width<=860px){.rz-shell{flex-direction:column!important}.rz-side{display:none}.rz-topbar{background:var(--nav-bg);color:#fff;z-index:30;flex:none;align-items:center;gap:10px;height:54px;padding:0 14px;display:flex;position:sticky;top:0}.rz-topbar-title{flex:1;font-size:14px;font-weight:800}.rz-theme-btn.dark-chrome{border-color:var(--nav-line)}.rz-tabs{z-index:50;background:var(--card-bg);border-top:1px solid var(--line);padding:6px 4px calc(6px + 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14px;font-size:13px;font-weight:700;display:flex}.rz-hm-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;margin-bottom:16px;display:grid}.rz-cont{background:var(--nav-bg);color:#fff;box-shadow:var(--shadow-rz);border-radius:16px;flex-direction:column;gap:14px;min-height:196px;padding:22px 22px 20px;display:flex}.rz-cont-top{justify-content:space-between;gap:10px;display:flex}.rz-cont-eyebrow{letter-spacing:.14em;color:var(--signal);font-size:11px;font-weight:800}.rz-cont-net{color:#7e96ab;align-items:center;gap:6px;font-size:11px;display:flex}.rz-dot{border-radius:50%;flex:none;width:6px;height:6px;display:inline-block}.rz-cont-body{flex:1}.rz-cont-title{letter-spacing:-.01em;margin-bottom:3px;font-size:19px;font-weight:800}.rz-cont-sub{color:#a9bccc;font-size:13px}.rz-cont-bar{background:#ffffff24;border-radius:99px;height:5px;margin-bottom:14px;overflow:hidden}.rz-cont-bar span{background:var(--signal);border-radius:99px;height:100%;display:block}.rz-cont-actions{flex-wrap:wrap;gap:9px;display:flex}.rz-btn-signal{background:var(--signal);color:var(--signal-ink);cursor:pointer;border:0;border-radius:10px;min-height:44px;padding:11px 18px;font-family:inherit;font-size:13.5px;font-weight:800}.rz-btn-signal:hover{filter:brightness(1.06)}.rz-btn-ghost{color:#fff;cursor:pointer;background:0 0;border:1px solid #ffffff47;border-radius:10px;min-height:44px;padding:11px 16px;font-family:inherit;font-size:13.5px;font-weight:700}.rz-btn-ghost:hover{background:#ffffff14}.rz-btn-primary{background:var(--btn-bg);color:var(--btn-ink);cursor:pointer;border:0;border-radius:10px;min-height:42px;padding:10px 16px;font-family:inherit;font-size:13px;font-weight:800}.rz-btn-primary:hover{filter:brightness(1.08)}.rz-hm-side{grid-template-columns:1fr 1fr;gap:16px;min-width:0;display:grid}.rz-goal,.rz-ready{background:var(--card-bg);border:1px solid var(--line);box-shadow:var(--shadow-rz);border-radius:16px;flex-direction:column;padding:18px;display:flex}.rz-goal{justify-content:center;align-items:center;gap:8px}.rz-ring{width:84px;height:84px;position:relative}.rz-ring-num{color:var(--text-main);text-align:center;place-items:center;font-size:16px;font-weight:800;display:grid;position:absolute;inset:0}.rz-ring-num span{color:var(--faint);font-size:10px;font-weight:600;display:block}.rz-goal-lbl{color:var(--text-main);font-size:12.5px;font-weight:700}.rz-goal-cap{color:var(--text-muted);text-align:center;font-size:11.5px}.rz-ready{justify-content:center;gap:10px}.rz-ready-num{letter-spacing:-.02em;color:var(--text-main);align-items:baseline;gap:6px;font-size:30px;font-weight:800;display:flex}.rz-ready-num span{color:var(--text-muted);font-size:13px;font-weight:600}.rz-ready-bar{background:var(--line);border-radius:99px;height:6px;overflow:hidden}.rz-ready-bar span{background:linear-gradient(90deg, var(--brand), var(--signal));border-radius:99px;height:100%;display:block}.rz-ready-cap{color:var(--text-muted);font-size:11.5px}.rz-ready-cap em{color:var(--faint);font-style:normal}.rz-weak{background:var(--card-bg);border:1px solid var(--line);box-shadow:var(--shadow-rz);border-radius:16px;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:24px;padding:16px 18px;display:flex}.rz-weak-lead{min-width:220px;color:var(--warn);flex:1;align-items:center;gap:9px;display:flex}.rz-weak-lead span{color:var(--text-main);font-size:13.5px;font-weight:700}.rz-weak-chips{flex-wrap:wrap;gap:7px;display:flex}.rz-weak-chips span{background:var(--warn-soft);color:var(--warn);border-radius:999px;padding:5px 11px;font-size:12px;font-weight:700}.rz-zero{background:var(--card-bg);border:1px dashed var(--line-strong);text-align:center;border-radius:16px;margin-bottom:24px;padding:34px 26px}.rz-zero-glyph{background:var(--signal-soft);border-radius:12px;place-items:center;width:44px;height:44px;margin:0 auto 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14px;font-family:inherit;font-size:12.5px;font-weight:700;display:inline-flex}.rz-subtab:hover{border-color:var(--brand);color:var(--brand)}.rz-subtab.active{background:var(--brand);border-color:var(--brand);color:#fff}.rz-subtab.back{border-style:dashed}@media (width<=860px){.rz-subtabs{-webkit-overflow-scrolling:touch;flex-wrap:nowrap;padding-bottom:4px;overflow-x:auto}.rz-subtab{flex:none}.rz-home,.rz-tland-page,.rz-theory-page:not(.focus-mode-page){padding-left:14px;padding-right:14px}.rz-theory-page .content-area.focus-mode{margin-left:-14px;margin-right:-14px}}.rz-ready-hero{margin-bottom:24px}.results-page .section-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.rz-ai-note{background:var(--warn-soft);color:var(--warn);border:1px solid color-mix(in srgb, var(--warn) 30%, transparent);border-radius:12px;align-items:flex-start;gap:9px;margin-bottom:14px;padding:11px 14px;font-size:12.5px;font-weight:600;line-height:1.55;display:flex}.rz-ai-note svg{flex:none;margin-top:2px}.rz-band-scores{flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 16px;display:flex}.rz-band-scores span{border-radius:999px;padding:5px 12px;font-size:12.5px;font-weight:700}.rz-band-scores span.ok{background:var(--ok-soft);color:var(--ok)}.rz-band-scores span.fail{background:var(--warn-soft);color:var(--err)}.rz-band-scores small{color:var(--text-muted);flex-basis:100%;font-size:11.5px}.hazard-countdown-num{color:#fff;text-shadow:0 2px 18px #0009;font-size:84px;font-weight:800;line-height:1;animation:1s ease-in-out infinite hz-tick}.hazard-countdown-num.held{opacity:.65;animation:none}@keyframes hz-tick{0%{transform:scale(1)}12%{transform:scale(1.18)}40%{transform:scale(1)}}.countdown-actions{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.hazard-view-controls button.assist-on{background:var(--signal);color:var(--signal-ink);border-color:var(--signal)}.hazard-assist-band{pointer-events:none;z-index:5;background:#091119c7;border-radius:999px;align-items:center;gap:6px;padding:7px 14px;display:flex;position:absolute;top:12px;left:50%;transform:translate(-50%)}.hazard-assist-band span{color:#fff;background:#ffffff29;border-radius:50%;place-items:center;width:26px;height:26px;font-size:13px;font-weight:800;display:grid}.hazard-assist-band span.now{background:var(--signal);color:var(--signal-ink);transform:scale(1.15)}.hazard-assist-band span.gone{opacity:.35}.hazard-assist-band em{color:#fff;margin-left:4px;font-size:12.5px;font-style:normal;font-weight:700}.pause-timeline{margin-top:14px}.pause-timeline .timeline-track{background:#16232f29;border-radius:99px;height:14px;position:relative;overflow:visible}.pause-timeline .timeline-window{background:#4cc38a8c;border-radius:4px;position:absolute;top:0;bottom:0}.pause-timeline .timeline-click-flag{border-radius:2px;width:3px;position:absolute;top:-3px;bottom:-3px}.pause-timeline .timeline-click-flag.scoring-click{background:#4da3ff}.pause-timeline .timeline-click-flag.missed-click{background:#ff6b5e}.pause-timeline .timeline-nowmark{background:#16232f;border-radius:2px;width:3px;position:absolute;top:-5px;bottom:-5px;box-shadow:0 0 0 1px #ffffffe6}.pause-timeline .timeline-labels{color:#55636f;justify-content:space-between;margin-top:6px;font-size:11px;font-weight:700;display:flex}.pause-timeline-note{color:#55636f;margin:6px 0 0;font-size:11.5px}.dark-theme .pause-timeline .timeline-track{background:#ffffff2e}.dark-theme .pause-timeline .timeline-nowmark{background:#fff;box-shadow:0 0 0 1px #0009}.dark-theme .pause-timeline .timeline-labels,.dark-theme .pause-timeline-note{color:#97a6b2}.rz-tutor-page{flex-direction:column;max-width:860px;display:flex}.rz-chat{background:var(--card-bg);border:1px solid var(--line);min-height:300px;max-height:52vh;box-shadow:var(--shadow-rz);border-radius:16px;flex-direction:column;flex:1;gap:14px;padding:18px;display:flex;overflow-y:auto}.rz-msg-row{align-items:flex-end;gap:8px;display:flex}.rz-msg-row.user{justify-content:flex-end}.rz-msg-avatar{border-radius:50%;flex:none;place-items:center;width:28px;height:28px;font-size:11px;font-weight:800;display:grid}.rz-msg-avatar.ai{background:var(--brand);color:#fff}.rz-msg-avatar.user{background:var(--signal);color:var(--signal-ink)}.rz-msg-bubble{max-width:78%;color:var(--text-main);padding:12px 15px;font-size:13.5px}.rz-msg-bubble.ai{background:var(--bg-app);border:1px solid var(--line);border-radius:14px 14px 14px 4px}.rz-msg-bubble.user{background:var(--brand);color:#fff;border-radius:14px 14px 4px}.rz-msg-bubble.typing{gap:4px;padding:14px 16px;display:flex}.rz-msg-bubble.typing span{background:var(--text-muted);border-radius:50%;width:7px;height:7px;animation:1.1s infinite rz-typing}.rz-msg-bubble.typing span:nth-child(2){animation-delay:.18s}.rz-msg-bubble.typing span:nth-child(3){animation-delay:.36s}@keyframes rz-typing{0%,60%,to{opacity:.35;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}.rz-type-caret{animation:.8s step-start infinite rz-caret}@keyframes rz-caret{50%{opacity:0}}.rz-presets{grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0;display:grid}.rz-presets button{background:var(--card-bg);color:var(--brand);border:1px solid var(--line);cursor:pointer;text-align:left;border-radius:10px;min-height:44px;padding:10px 12px;font-family:inherit;font-size:12.5px;font-weight:700;line-height:1.35}.rz-presets button:hover{border-color:var(--brand);background:var(--brand-soft)}.rz-presets button:disabled{opacity:.5;cursor:default}@media (width<=700px){.rz-presets{grid-template-columns:repeat(2,1fr)}}.rz-chat-inputbar{align-items:flex-end;gap:10px;display:flex}.rz-chat-inputbar textarea{resize:none;background:var(--card-bg);min-height:58px;max-height:160px;color:var(--text-main);border:2px solid var(--brand);border-radius:12px;flex:1;padding:12px 14px;font-family:inherit;font-size:14.5px;line-height:1.5}.rz-chat-inputbar textarea::placeholder{color:var(--text-muted);opacity:1}.rz-chat-inputbar textarea:focus{box-shadow:0 0 0 3px var(--brand-soft);outline:none}.rz-chat-send{background:var(--btn-bg);color:var(--btn-ink);cursor:pointer;border:0;border-radius:12px;flex:none;place-items:center;width:54px;height:54px;display:grid}.rz-chat-send:disabled{opacity:.45;cursor:default}.dark-theme .rz-msg-bubble.ai{background:#0d141b}.dark-theme .eyebrow{color:#55b7e8}.dark-theme .chip-row button{color:#e2e8f0;background:#1e293b;border-color:#475569}.dark-theme .chip-row button.active{color:#0f172a;background:#e2e8f0;border-color:#e2e8f0}.dark-theme .question-count{color:#a8d4f0;background:#16324a}.dark-theme .video-card small{color:#55b7e8}.dark-theme .video-card p{color:#97a6b2}.pause-nav-row{gap:10px;margin-bottom:10px;display:flex}.pause-nav-row button{flex:1;justify-content:center;align-items:center;gap:6px;min-height:44px;display:inline-flex}.hazard-pause-card{width:min(92vw,680px);max-width:680px}.pause-timeline .timeline-track.seekable{cursor:pointer;height:18px}.pause-timeline .timeline-window.segmented{display:flex;overflow:hidden}.tl-seg{color:#0b3b24;border-right:1px solid #ffffff8c;flex:1;place-items:center;font-size:9px;font-weight:800;line-height:1;display:grid}.tl-seg:last-child{border-right:0}.timeline-window.segmented .tl-seg:first-child{color:#fff;background:#177a4cd9}.timeline-window.segmented .tl-seg:nth-child(2){color:#fff;background:#177a4cad}.timeline-window.segmented .tl-seg:nth-child(3){background:#4cc38abf}.timeline-window.segmented .tl-seg:nth-child(4){background:#4cc38a8c}.timeline-window.segmented 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.menu-group-title{border-top:0;margin-top:0}.reader-menu-dropdown button.active{color:#fff;background:#3b82f659}.reader-menu-dropdown button{white-space:normal;line-height:1.35}@media (width<=760px){.reader-menu-dropdown{min-width:78vw;max-height:62vh}.reader-menu-dropdown button{padding:11px 10px;font-size:13.5px}.transcript-line-row.active .karaoke-line-p{font-size:20px;line-height:1.55}.transcript-line-row.active{transform:none}.karaoke-line-p{font-size:20px;line-height:1.55}.player-transcript-box{min-height:58vh;max-height:78vh;padding:10px 8px 8px}.player-mode-active .page{padding-left:2px;padding-right:2px}.player-active-card{padding:10px 6px}.player-transcript-box{margin-left:-2px;margin-right:-2px}.transcript-lines-list{padding-right:2px}}@media (width<=860px){.rz-theory-page:has(.player-mode-active){padding-left:4px;padding-right:4px}}.hazard-official-tag{letter-spacing:.03em;color:#0e7a4a;background:#177a4c29;border:1px solid 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button.active{background:var(--card,#fff);color:var(--text,#0b0c0c);box-shadow:0 1px 3px #00000024}.period-toggle em{color:#0b7a55;background:#0e9f6e29;border-radius:3px;padding:1px 6px;font-size:11px;font-style:normal;font-weight:700}.plan-grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));align-items:start;gap:14px;display:grid}.plan-card{background:var(--card,#fff);border:1px solid var(--border,#0000001f);border-radius:14px;flex-direction:column;gap:12px;padding:20px 19px 18px;display:flex;position:relative}.plan-card.featured{border-width:2px;border-color:#1d70b8}.plan-card.current{border-color:#0e9f6e}.plan-flag{letter-spacing:.05em;color:#fff;background:#1d70b8;border-radius:999px;padding:3px 9px;font-size:11px;font-weight:800;position:absolute;top:-10px;left:19px}.plan-card h3{align-items:baseline;gap:7px;margin:0;font-size:19px;display:flex}.plan-card h3 small{color:var(--muted,#6b7476);letter-spacing:.04em;font-size:12px;font-weight:600}.plan-price{align-items:baseline;gap:3px;display:flex}.plan-price strong{letter-spacing:-.03em;font-variant-numeric:tabular-nums;font-size:30px;font-weight:800}.plan-price span{color:var(--muted,#6b7476);font-size:14px}.plan-card ul{flex-direction:column;flex:1;gap:7px;margin:0;padding:0;list-style:none;display:flex}.plan-card li{color:var(--text,#17272d);gap:8px;font-size:13.5px;line-height:1.5;display:flex}.plan-card li svg{color:#0e9f6e;flex:none;margin-top:3px}.plan-note{color:var(--muted,#6b7476);margin:0;font-size:12px}.plan-card button{justify-content:center;width:100%}.account-notice{background:#1d70b812;border-left:5px solid #1d70b8;border-radius:6px;max-width:660px;margin:14px 0;padding:11px 14px;font-size:14px;line-height:1.6}.account-notice.warn{background:#d4351c12;border-left-color:#d4351c}.account-notice code{background:#00000012;border-radius:3px;padding:1px 5px;font-size:12.5px}.account-form{flex-direction:column;gap:13px;max-width:380px;margin-top:8px;display:flex}.account-tabs{background:#0000000f;border-radius:8px;gap:2px;padding:3px;display:flex}.account-tabs button{font:inherit;cursor:pointer;color:var(--muted,#6b7476);background:0 0;border:0;border-radius:6px;flex:1;padding:8px;font-size:14px;font-weight:700}.account-tabs button.active{background:var(--card,#fff);color:var(--text,#0b0c0c)}.account-form label{color:var(--muted,#6b7476);flex-direction:column;gap:5px;font-size:13px;font-weight:600;display:flex}.account-form input{font:inherit;border:1px solid var(--border,#0003);background:var(--card,#fff);color:inherit;border-radius:8px;padding:10px 12px;font-size:15px}.account-form input:focus-visible{outline-offset:0;border-color:#0b0c0c;outline:3px solid #fd0}.account-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;display:grid}.account-panel{background:var(--card,#fff);border:1px solid var(--border,#0000001f);border-radius:12px;flex-direction:column;gap:8px;padding:16px 18px;display:flex}.account-panel h3{letter-spacing:.05em;text-transform:uppercase;color:var(--muted,#6b7476);margin:0;font-size:14px}.account-plan{align-items:baseline;gap:7px;margin:0;font-size:22px;font-weight:800;display:flex}.account-plan small{color:var(--muted,#6b7476);font-size:12px;font-weight:600}.account-sub{color:var(--muted,#6b7476);margin:0;font-size:13.5px;line-height:1.55}.account-actions{flex-wrap:wrap;gap:8px;margin-top:4px;display:flex}.account-ok{color:#0b7a55;margin:0;font-size:13px;font-weight:700}.account-fail{color:#d4351c;margin:0;font-size:13px;font-weight:700}.admin-stats{background:var(--border,#0000001f);border:1px solid var(--border,#0000001f);border-radius:10px;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1px;margin:4px 0 16px;display:grid;overflow:hidden}.admin-stats>div{background:var(--card,#fff);padding:14px 16px}.admin-stats strong{font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-size:26px;font-weight:800;display:block}.admin-stats span{color:var(--muted,#6b7476);font-size:12px}.admin-search{gap:8px;max-width:420px;margin-bottom:12px;display:flex}.admin-search input{font:inherit;border:1px solid var(--border,#0003);background:var(--card,#fff);color:inherit;border-radius:8px;flex:1;padding:9px 12px}.admin-table{border-collapse:collapse;width:100%;font-size:14px}.admin-table th,.admin-table td{text-align:left;border-bottom:1px solid var(--border,#00000017);padding:9px 12px}.admin-table thead th{letter-spacing:.06em;text-transform:uppercase;color:var(--muted,#6b7476);font-size:11.5px}.admin-table select{font:inherit;border:1px solid var(--border,#0003);background:var(--card,#fff);color:inherit;border-radius:6px;padding:4px 8px;font-size:13px}[data-theme=dark] .period-toggle,.dark .period-toggle,[data-theme=dark] .account-tabs,.dark .account-tabs{background:#ffffff14}[data-theme=dark] .plan-flag,.dark .plan-flag{color:#0b0c0c;background:#6aa9e0}.expl-tools{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.expl-tools .xref-row{border-top:0;margin-top:0;padding-top:0}.official-audio-btn{font:inherit;cursor:pointer;color:#0b7a55;background:#0e9f6e1a;border:1px solid #0e9f6e66;border-radius:999px;align-items:center;gap:5px;margin-top:12px;padding:4px 10px;font-size:12.5px;font-weight:700;display:inline-flex}.official-audio-btn:hover{background:#0e9f6e33}.official-audio-btn:focus-visible{outline-offset:1px;outline:3px solid #fd0}[data-theme=dark] .official-audio-btn,.dark .official-audio-btn{color:#6fdcaa;background:#54ad7e29;border-color:#54ad7e73}